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Virtualization

ID	Contact Title	Contact Name	Country	Rating


1	Sales Agent	Patricio Simpson	USA	1 2 3 4 5
2	Sales Representative	Georg Pipps	Germany	1 2 3 4 5
3	Owner	Patricio Simpson	Germany	1 2 3 4 5
4	Accounting Manager	Jaime Yorres	Argentina	1 2 3 4 5
5	Sales Representative	Georg Pipps	Italy	1 2 3 4 5
6	Sales Manager	Jaime Yorres	Spain	1 2 3 4 5
7	Accountant	Paul Henriot	England	1 2 3 4 5
8	Sales Manager	Matti Karttunen	England	1 2 3 4 5
9	Sales Consultant	Georg Pipps	Bulgaria	1 2 3 4 5
10	Sales Manager	Matti Karttunen	Argentina	1 2 3 4 5
11	Sales Consultant	Howard Snyder	Argentina	1 2 3 4 5
12	Sales Representative	Pascale Cartrain	Argentina	1 2 3 4 5
13	Sales Consultant	Hanna Moos	USA	1 2 3 4 5
14	Owner	Matti Karttunen	England	1 2 3 4 5
15	Accounting Manager	Georg Pipps	France	1 2 3 4 5
16	Accountant	Jaime Yorres	Argentina	1 2 3 4 5
17	Accountant	Jaime Yorres	France	1 2 3 4 5
18	Accountant	Howard Snyder	Austria	1 2 3 4 5
19	Marketing Manager	Matti Karttunen	Brazil	1 2 3 4 5
20	Owner	Hanna Moos	Argentina	1 2 3 4 5
21	Sales Consultant	Pascale Cartrain	Bulgaria	1 2 3 4 5
22	Owner	Georg Pipps	Brazil	1 2 3 4 5
23	Sales Consultant	Pascale Cartrain	Brazil	1 2 3 4 5
24	Marketing Assistant	Howard Snyder	Austria	1 2 3 4 5
25	Sales Representative	Pascale Cartrain	France	1 2 3 4 5
26	Owner	Elizabeth Lincoln	USA	1 2 3 4 5
27	Marketing Assistant	Jaime Yorres	France	1 2 3 4 5
28	Sales Representative	Patricio Simpson	Italy	1 2 3 4 5
29	Marketing Assistant	Antonio Moreno	Italy	1 2 3 4 5
30	Accountant	Antonio Moreno	Italy	1 2 3 4 5
31	Accounting Manager	Georg Pipps	Germany	1 2 3 4 5
32	Marketing Manager	Patricio Simpson	Argentina	1 2 3 4 5
33	Owner	Paul Henriot	Brazil	1 2 3 4 5
34	Sales Manager	Elizabeth Lincoln	USA	1 2 3 4 5
35	Sales Representative	Howard Snyder	Spain	1 2 3 4 5
36	Accountant	Antonio Moreno	Spain	1 2 3 4 5
37	Marketing Manager	Patricio Simpson	England	1 2 3 4 5
38	Marketing Assistant	Patricio Simpson	France	1 2 3 4 5
39	Sales Manager	Georg Pipps	Bulgaria	1 2 3 4 5
40	Sales Consultant	Hanna Moos	Argentina	1 2 3 4 5
41	Marketing Manager	Matti Karttunen	France	1 2 3 4 5
42	Accounting Manager	Antonio Moreno	Italy	1 2 3 4 5
43	Accountant	Pascale Cartrain	Argentina	1 2 3 4 5
44	Marketing Manager	Hanna Moos	Italy	1 2 3 4 5
45	Sales Agent	Jaime Yorres	Germany	1 2 3 4 5
46	Owner	Pascale Cartrain	France	1 2 3 4 5
47	Sales Associate	Pascale Cartrain	Spain	1 2 3 4 5
48	Owner	Paul Henriot	Argentina	1 2 3 4 5
49	Sales Manager	Hanna Moos	Spain	1 2 3 4 5
50	Marketing Assistant	Howard Snyder	Bulgaria	1 2 3 4 5
51	Owner	Hanna Moos	USA	1 2 3 4 5
52	Accounting Manager	Howard Snyder	Italy	1 2 3 4 5
53	Sales Representative	Howard Snyder	Bulgaria	1 2 3 4 5
54	Sales Representative	Patricio Simpson	Spain	1 2 3 4 5
55	Marketing Assistant	Howard Snyder	Spain	1 2 3 4 5
56	Accountant	Paul Henriot	Germany	1 2 3 4 5
57	Sales Representative	Matti Karttunen	USA	1 2 3 4 5
58	Sales Consultant	Elizabeth Lincoln	Germany	1 2 3 4 5
59	Marketing Manager	Antonio Moreno	Bulgaria	1 2 3 4 5
60	Sales Agent	Matti Karttunen	Germany	1 2 3 4 5
61	Marketing Manager	Jaime Yorres	Brazil	1 2 3 4 5
62	Sales Agent	Patricio Simpson	Austria	1 2 3 4 5
63	Marketing Manager	Paul Henriot	France	1 2 3 4 5
64	Accountant	Pascale Cartrain	Spain	1 2 3 4 5
65	Sales Agent	Pascale Cartrain	Austria	1 2 3 4 5
66	Sales Agent	Antonio Moreno	Italy	1 2 3 4 5
67	Sales Manager	Hanna Moos	Germany	1 2 3 4 5
68	Marketing Assistant	Patricio Simpson	Spain	1 2 3 4 5
69	Marketing Manager	Howard Snyder	Argentina	1 2 3 4 5
70	Accounting Manager	Antonio Moreno	France	1 2 3 4 5
71	Accounting Manager	Jaime Yorres	France	1 2 3 4 5
72	Sales Associate	Jaime Yorres	England	1 2 3 4 5
73	Marketing Assistant	Matti Karttunen	Brazil	1 2 3 4 5
74	Sales Manager	Jaime Yorres	France	1 2 3 4 5
75	Owner	Elizabeth Lincoln	Austria	1 2 3 4 5
76	Sales Agent	Georg Pipps	Germany	1 2 3 4 5
77	Marketing Assistant	Hanna Moos	England	1 2 3 4 5
78	Accounting Manager	Antonio Moreno	Austria	1 2 3 4 5
79	Sales Agent	Georg Pipps	Spain	1 2 3 4 5
80	Accountant	Georg Pipps	USA	1 2 3 4 5
81	Marketing Assistant	Jaime Yorres	Italy	1 2 3 4 5
82	Sales Associate	Elizabeth Lincoln	Argentina	1 2 3 4 5
83	Owner	Hanna Moos	Austria	1 2 3 4 5
84	Sales Consultant	Georg Pipps	France	1 2 3 4 5
85	Accounting Manager	Georg Pipps	Germany	1 2 3 4 5
86	Sales Agent	Hanna Moos	Germany	1 2 3 4 5
87	Accounting Manager	Jaime Yorres	Germany	1 2 3 4 5
88	Owner	Hanna Moos	Italy	1 2 3 4 5
89	Sales Associate	Matti Karttunen	England	1 2 3 4 5
90	Owner	Jaime Yorres	France	1 2 3 4 5
91	Sales Representative	Georg Pipps	Austria	1 2 3 4 5
92	Owner	Elizabeth Lincoln	Austria	1 2 3 4 5
93	Marketing Assistant	Patricio Simpson	Brazil	1 2 3 4 5
94	Owner	Hanna Moos	England	1 2 3 4 5
95	Sales Agent	Patricio Simpson	Italy	1 2 3 4 5
96	Sales Associate	Elizabeth Lincoln	Spain	1 2 3 4 5
97	Sales Agent	Patricio Simpson	Brazil	1 2 3 4 5
98	Marketing Assistant	Jaime Yorres	Spain	1 2 3 4 5
99	Sales Manager	Patricio Simpson	USA	1 2 3 4 5
100	Sales Associate	Antonio Moreno	USA	1 2 3 4 5


...131 132 133 134 135 136 137 138 139 140 ... Item 132001 to 133000 of 300000 Page: of 300 GoPage size:

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Columns
- ID
- Contact Title
- Contact Name
- Country
- Rating

About this demo
C#
VB
Download demo code files
Isolate this demo as a stand-alone application

RadGrid's virtualization feature allows you to handle hundreds of thousands of rows without negatively impacting the user experience. The control achieves this thanks to its ItemsPerView property allowing you to control the number of items loaded at a time. Users can now scroll, as well as show, hide, resize and reorder columns without any waiting time.

This demo shows how quickly Telerik's ASP.NET DataGrid can handle user interactions with 300,000 items. You can configure the component to allow scrolling through the entire data set or only through the current page by using EnableCurrentPageScrollOnly property,.

<%@ Page Language="vb" AutoEventWireup="false" CodeFile="DefaultVB.aspx.vb" Inherits="Telerik.GridExamplesVBNET.Performance.Virtualization.DefaultVB" %>

<%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
<%@ Register TagPrefix="qsf" Namespace="Telerik.QuickStart" %>
<!DOCTYPE html>
<html xmlns='http://www.w3.org/1999/xhtml'>
<head runat="server">
    <title>Telerik ASP.NET Example</title>
    <link href="styles.css" rel="stylesheet" />
</head>
<body>
    <form id="form1" runat="server">
    <telerik:RadScriptManager runat="server" ID="RadScriptManager1" />
    <telerik:RadSkinManager ID="RadSkinManager1" runat="server" ShowChooser="true" />
    <telerik:RadAjaxLoadingPanel runat="server" ID="RadAjaxLoadingPanel1"></telerik:RadAjaxLoadingPanel>
    <telerik:RadAjaxPanel runat="server" ID="RadAjaxPanel" LoadingPanelID="RadAjaxLoadingPanel1" CssClass="demo-container">
        <telerik:RadGrid RenderMode="Lightweight" ID="RadGrid1" runat="server"  AutoGenerateColumns="false"
            AllowSorting="true" GroupingEnabled="false"
            EnableHeaderContextMenu="true" AllowPaging="true" PageSize="1000" OnNeedDataSource="RadGrid1_NeedDataSource">
            <MasterTableView TableLayout="Fixed">
                <Columns>
                    <telerik:GridBoundColumn UniqueName="ID" HeaderText="ID" HeaderStyle-Width="50px" DataField="ID"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactTitle" HeaderText="Contact Title" HeaderStyle-Width="150px" DataField="ContactTitle"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactName" HeaderText="Contact Name" HeaderStyle-Width="150" DataField="ContactName"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="Country" HeaderText="Country" HeaderStyle-Width="100px" DataField="Country"></telerik:GridBoundColumn>
                    <telerik:GridRatingColumn UniqueName="Rating" HeaderText="Rating" HeaderStyle-Width="100px" DataField="Rating"></telerik:GridRatingColumn>
                </Columns>
            </MasterTableView>
            <ClientSettings ReorderColumnsOnClient="true" AllowColumnsReorder="true" ColumnsReorderMethod="Reorder">
                <Virtualization EnableVirtualization="true" InitiallyCachedItemsCount="2000"
                    LoadingPanelID="RadAjaxLoadingPanel1" ItemsPerView="100"/>
                <Scrolling AllowScroll="true" UseStaticHeaders="true" ScrollHeight="500px" />
                <Resizing AllowColumnResize="true" />
            </ClientSettings>
            <PagerStyle Mode="NextPrevNumericAndAdvanced"></PagerStyle>
        </telerik:RadGrid>
    </telerik:RadAjaxPanel>
    </form>
</body>
</html>

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